Rotary hammers are more powerful, though, and have a “hammer-only” mode with no rotation. They usually have an SDS chuck, ...

The Bosch hammer drill (right) has modes for drill ... Rotary hammer drills typically have an SDS-Plus quick-release chuck, which requires specific bits. These bits have a slotted and keyed ...

This unit also has an adjustable depth rod, a side accessory handle, a belt hook, and a slotted drive shaft/system (SDS) chuck. In testing, this rotary hammer drill powered through all our masonry ...